嘿,我试图在新的ubuntu机器上安装rails。我安装了ruby和rvm,但我得到了“无法构建gem本机扩展”的错误。这是什么意思?无法构建gem本机扩展(mkmf(LoadError)) - Ubuntu 12.04
$ sudo gem install rails -v 3.2.9
(不须藤说我没有权限)
然后它输出了大量的“获取”命令,最终这个错误:
Building native extensions. This could take a while...
ERROR: Error installing rails:
ERROR: Failed to build gem native extension.
/usr/bin/ruby1.9.1 extconf.rb
/usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require': cannot load such file -- mkmf (LoadError)
from /usr/lib/ruby/1.9.1/rubygems/custom_require.rb:36:in `require'
from extconf.rb:1:in `<main>'
Gem files will remain installed in /var/lib/gems/1.9.1/gems/json-1.8.0 for inspection.
Results logged to /var/lib/gems/1.9.1/gems/json-1.8.0/ext/json/ext/generator/gem_make.out
当我键入
$rails server
它说轨未安装
你见过[这个线程](http://stackoverflow.com/questions/12552929/failed-to-build-gem-native-extension-rails-install?rq=1) –
你不应该使用'sudo '用rvm! – mpapis